What is a 9 volt battery used for?

A nine-volt battery, either disposable or rechargeable, is usually used in smoke alarms, smoke detectors, walkie-talkies, transistor radios, test and instrumentation devices, medical batteries, LCD displays, and other small portable appliances.

What is the equivalent of a 9 volt battery?

9V Batterys are rectangular in shape and with dimensions 17.5 x 48.5 x 26.5 mm….Technical Specifications Of The 9V Battery.

9V Battery Nominal Voltage:	9 Volts
Capacity (Alkaline) ≈	550 mAh
Capacity (Carbon-Zinc) ≈	400 mAh
Capacity (Lithium Primary) ≈	1200 mAh
Capacity (NiMH) ≈	175-300mAh

Why is it called a 9 volt battery?

Before the mid-1950s, in the days of vacuum tube (valve) radios used batteries designed specifically for vacuum tubes, there was a nine-volt grid bias battery or (US) “C” battery, which had taps for various voltages from 1.5 to 9 volts.

Are all 9 volt batteries the same?

No, unfortunately there are very small differences in size of 9 volt batteries, even in brand name 9v batteries such as Energizer (or Energizer Industrial) and Duracell (or Duracell Procell). However these standards still allow for varying in size for a 9 volt battery. …

How long do 9V batteries last?

Also depends on the battery technology. Low demand applications like smoke detectors, alkaline batteries last 1–2 years while lithium batteries can last 5–10 years. Transistor radio application is more demanding and alkaline batteries might last for 48 hours while lithium might last 5 days.

What can I use if I don’t have a 9 volt battery?

Yes, a 9V battery is six AAA batteries in series. Yep. Connect six of the AA or AAA batteries in series end to end, positive to negative and you’ll have nine volts. Each of those cells is 1.5V so if you connect 6 of them in series the voltage will be additive, in this case 9.

Are there different size 9 volt batteries?

No, unfortunately there are very small differences in size of 9 volt batteries, even in brand name 9v batteries such as Energizer (or Energizer Industrial) and Duracell (or Duracell Procell). This plays a significant role in 9v batteries fitting properly into a device.

Are 9 volt batteries different sizes?

The dimensions for 9 volt batteries are H 48 mm × L 25 mm × W 15 mm (1.9 in × 1 in × 0.6 in). However these standards still allow for varying in size for a 9 volt battery. The maximum size permitted, for example, is 48.5 mm × 26.5 mm × 17.5 mm. A correctly fitting 9v battery should just drop in the holder.

Are there AAA batteries in a 9 volt battery?

It’s not. All 9V’s are made from six 1.5V cells, but “AAA” has a specific meaning. No 9V uses them, they’re too big to fit in the case. The cylindrical cells that look like AAA’s are smaller – they’re not AAA’s, and they have a much lower capacity.

Where can I find a 9 volt battery in my house?

There are smoke detectors, transistor radios, lots of handheld test equipment, electronic toys, etc. There are more and more things that use 9V batteries that can run from one to four AA orAAA cells.

What are the best rechargeable 9 volt batteries?

– Duracell CopperTop 9V Alkaline Batteries | 9 Volt Battery – Energizer 9V Lithium Batteries, Ultimate Lithium 9 Volt Batteries – Rayovac Fusion 9V Batteries, Premium Alkaline 9V Battery – VONIKO 9V Alkaline Batteries with a 7 | Year Shelf Life – ALLMAX All-Powerful Alkaline Batteries – 9V| Smoke Detector Alarm

A 9-volt battery holds the same amount of charge as 6 AA batteries, making it a much more powerful battery for Walkie-talkies and handheld talk radios. These batteries are used to transmit the signals between the two devices, while simultaneously powering the microphone and speakers.

How many Mah in a 9 volt battery?

with regards to battery capacity, you did not specify what type of chemistry your 9V battery is, and it matters. Since you said plain and normal, I assume it is alkaline type. Expect between 400 and 600 mAh. A good quality panasonic industrial type shows 570 mAh.. low end type probably more like 400.

What are items still use a 9 volt battery?

The nine-volt battery, or 9-volt battery, is a common size of battery that was introduced for the early transistor radios. It has a rectangular prism shape with rounded edges and a polarized snap connector at the top. This type is commonly used in walkie-talkies, clocks and smoke detectors.